Textile bobbin



Feb. 5, 1963 J. J. KAUFMANN, JR 3,076,620

TEXTILE BOBBIN Filed Jan. 3, 1961 INVENTOR. \JOHN J. KAUFMANN,J-R.

ATTOR NEY United States Patent 3,076,62il TEXTIILE EUBEIN John J. Kaufmann, In, Altamont Road, Paris Mountains, Greenville, SAC. Filed Jan. 3, 1961, Ser. No. 8il,078 1 Elairn. (Ci. 242--lili3.3)

This invention relates to textile bobbins of the type; having rings on the butt thereof for positioning the shuttle: within a bobbin by engagement of the rings with the: grooves of a bobbin shuttle grip and more especially to an improved means used therewith to prevent migration. of the rings and consequent longitudinal alignment of the: gaps within the rings.

The longitudinal alignment of the gaps within bobbin; rings presents a serious problem because the faulty positioning of a bobbin within the shuttle which sometimes results therefrom, upon an automatic change operation, can cause a warp break out. The aligned ends of the rings sometimes strike the upper edge of one of the grip arms resulting in the faulty reception of the bobbin butt: by the shuttle grip on an automatic bobbin change opera-- tion. The improper reception of the butt often causes: the tip of the bobbin to project above or below the bobbin cavity of the shuttle so as to engage the upper orlower portion of the shed of warp yarn causing a break; out.

The longitudinal alignment of the rings resulting from their migration within their circumferential grooves on the butt of a bobbin is thought to be caused by the con-- tinuous vibration of the loom during weaving, as well as: the action of the bobbin stripping and handling devices. Often the rings become loosened due to expansion of the rings over a period of time and due to temperature changes, together with shrinkage of the wood due to com pression and drying effects.

Accordingly, it is an object of this invention to pro-- vide effective means for preventing the circumferential. migration of bobbin rings.

An important object of the invention is to provide positive means for preventing the longitudinal alignment of bobbin rings upon the butt of a filling bobbin.

Another object of the invention is to provide an abutment positioned within the gap of a bobbin ring to positively prevent migration of the bobbin ring and yet not interfere with the bobbin change or weaving operation.

Still another object of the invention is to provide a simple, inexpensive way of positively preventing the longitudinal alignment of bobbin rings thus preventing faulty reception of the bobbin on the automatic change operation and resulting damage to the warp.

The construction designed to carry out the invention will be hereinafter described, together with other features thereof.

The invention will be more readily understood from a reading of the following specification and by reference to the accompanying drawing forming a part thereof, wherein an example of the invention is shown and wherein:

FIGURE 1 is a perspective view illustrating a bobbin, constructed in accordance with the present invention, positioned within a shuttle,

FIGURE 2 is a sectional view taken on the line 22 in FIGURE 1, and

FIGURE 3 is an end view of the butt of a bobbin, as illustrated in FIGURE 1, embodying the present invention.

The drawing illustrates a preferred embodiment of the invention in which a protuberance A is fixed to the butt of a textile bobbin by an elongated shank B extending securely into the wood of the butt of the bobbin. A

3,976,620 Patented Feb. 5, i963 protuberance A is positioned within each of the gaps within the rings, transverse to and in alignment with each of the rings, to prevent migration of the rings within the circumferential grooves provided therefor in the butt of the bobbin. The protuberances A extend above the outer periphery of the bobbin butt and terminate below the outer periphery of said rings. Thus, the rings are restrained against rotational migration on the bobbin butt preventing the gaps from becoming longitudinally aligned.

Referring more specifically to the drawing, a nonmetallic textile bobbin is illustrated as having the usual rings lb carried in circular grooves 11 on the butt 12 of the bobbin. The blade 13 of the bobbin is longitudinally positioned within the bobbin cavity 14 of the shuttle 15 by engagement of the rings 10 by the opposed groups of grooves 16 and 17 carried by the shuttle grip arms 18 and 19, respectively. A shuttle grip 2ft, carrying the arms 18 and 19, is illustrated positioned within the shuttle 15. r A shuttle strap 21 is shown positioned in operative relation to the grip 26 During a proper automatic bobbin change operation the butt 12 of the bobbin slides down the inclined plate 21a of the shuttle strap 21 and the rings It) are engaged on both sides thereof by the respective groups of grooves 16 and 17. The grip arms 18 and 19 are provided with beveled portions 18a and 19a cut out on the inside edges thereof in alignment with the groups of grooves 16 and 17, respectively.

Each of the gaps 22, Within each of the bobbin rings 10, accommodates a protuberance A in the form of an abutment 23 attached to a shank 24. The shank 24 is illustrated as having a sharpened end 25 to facilitate its insertion into the wood or body of the butt 12. It will be noted that the upper edge of the abutment or head 23 is in alignment with the lower edge of the beveled portions 10a of the ends of the rings 10 forming, with the vertical ring ends 1% which extend upwardly to the medial portion of the rings, the gaps 22. The bevels 10a are provided to prevent the yarn from becoming entangled thereon during manipulation thereof. The sharpened portion 25 of the shank 24 preferably terminates short of the central bore 12a of the butt 12. Thus the rings 10 are positively positioned within the grooves 11 upon the butt 12.

While a preferred embodiment of the invention has been described using specific terms, such description is for illustrative purposes only, and it is to be understood that changes and variations may be made without departing from the spirit or scope of the following claim.

What is claimed is:

The combination of a non-metallic textile bobbin having rings carried in transverse grooves on the butt thereof for engagement with the grooves of a bobbin grip, said rings each having a gap therein, with means preventing the gaps from becoming longitudinally aligned including, an elongated shank extending securely into the material of the butt of the bobbin in the groove within each of said gaps transverse to and in alignment with each of said rings, and an abutment carried by each of said shanks extending outwardly of the periphery of said butt and terminating short of the outer periphery of said rings, whereby each of said rings is restrained against rotational migration on the bobbin butt thus preventing the gaps from becoming longitudinally aligned.

References Cited in the file of this patent FOREIGN PATENTS 

